Machine for jointing staves



L t e e h (No Model.)

J. PLEUKHA MACHINE FOR JOINTI No. 451,133. Patented Apr. 28, 1891.

INVENTOR James. -PZeuk/m17v ATTEST. W

(No Model.) 2 Sheets-Sheet 2'.

' J. PLEUKHARP.

MACHINE FOR JOINTING STAVES.

Patented Apr.28,1891.

UNITED STATES PATENT OFFICE.

JAMES ILEUKIIARP, OF COLUMBUS, OIIIO.

MACHINE FOR JOINTING STAVES.

SPECIFICATION forming part of Letters Patent No. 451,133, dated April28, 1891. Application filed February 10, 1890. Serial No. 339,870. (Nomodel.)

To all whom it may concern.-

Be it known that 1, JAMES PLEUKHARP, a citizen of the United States,residing at Columbus, in the county of Franklin and State of Ohio, haveinvented certain new and useful Improvements in Machines for JointingStaves; and I do hereby declare the' following tobe afull, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention relates to machines for jointing staves, and aims toprovide a stave of standard size, particularly as to width and bevel ofedges.

A further object of the invention is a machine that shall always make astave of exactly a given measurement in width at any given point, andshall furnish the stave with a perfect angleat all points along itsedge, so that it shall always tit exactly as an element in the barrel.

It is not my object to make this machine adaptable to the jointing ofstaves of all kinds and descriptions. It is not intended for thejointing of staves of various widths and thicknesses, nor for staves inwind or twisted. By the use of staves of various widths it is impossibleto make barrels of a standard diameter. Consequently the jointing anglesmust vary and the jointing cannot be done perfectly. The same faultexists in the use of the same stave in the making of barrels ofdifferent diameters, the differences being made up by the use of laggingplaced between the edges of the staves; also, if the staves are jointedall of them on one angle and then warped the warpage will change theangle. Now my machine is intended for j ointing, and by this jointing tomake a perfectly true standard stave out of sawed stock.

In the drawings, Figure 1 is an end view showing principal elements ofmachine. Fig. 2 is a full side View of the machine; Fig. 3,a detail endview of gearing and mechanism for operating the carriage.

A A represent cutters, which are slightly concaved on inner sides togive clearance; B B, cutter-mandrels in boxes I) b and provided withband-pulleys b h and with the locknuts b" b for the adjustment of thecutters; O O C, carriage with stave c bent thereon;

D D, plate or slide on which the carriage runs; E and F, catches forholding stave in place on carriage controlled by the springs e and f; GG G, mechanism for bending the stave down onto the carriage in itsproper place; G G G spring and rollers for guiding and controlling thebending mechanism; H, gearwheels, which mesh with the teeth 0 011 theupper surface of the lower part of the carriage O, serving to operatethe said carriage; I, lever pivoted at i for throwing the clutchoperating the gear mechanism; K and L, beveled lugs or stops operatingwith the lever I for throwing clutch; J, yoke having its ends engagingwith the band-pulleys R and R and operated by the lever I to reverse orstop the movement of the machine; M, hand-lever engaging with lever Ifor throwing clutch-yoke J; N, a stop at the end of frame to throw openthe catch F, releasing the stave; 0, guide against which the stavesprings when released by the catch F; P I, rollers operated by thepulley Q, which carry away the jointed stave from the machine; R R,clutches, which also serve as band-pulleys, which operate the gears ll Hand which are controlled by the lever mechanisms and stops I, M, K, andL. R is provided with a straight belt, R With a twisted belt.

Operation of machine: The stave c is first inserted under the catch F.Then by means of the foot-lever the bending mechanism Gis broughtforward against the end of the stave and downward, grappling the staveand bendingit down upon the carriage. The chamfered end of the stavestriking the beveled nose of the catch c it is forced back, allowing thestave to go down,and then springs again into place by reason of thecoil-spring 6, locking the stave in position, and the bending mech-.

anism returns to its original position. By means of the hand-lever M theoperator throws the clutch R into the gear H, operating both gears H Hin same direction and drawing the carriage between the cutters. \Vhenthe lever-arm of the catch F strikes the stop N, it is thrown upward,releasing the end of the stave. This end strikes the guide 0, whichguides it between the rollers P P, which then drag the stave out fromunder the catch 6 and carry it away from the machine. In the meantimethe forward movement of the carriage is kept up until the beveled stop Fstrikes the lever I, which throws the clutch R out and the clutch Rin,thus reversing the motion of the carriage and bringing it back to theoperator. Here it is stopped by the lever I coming in contact with thebeveled stop K, throwing both the clutches out of gear, and the machineis ready for another operation.

The bending mechanism is composed of treadle G pivoted to frame ofmachine,grappling-hook G, which passes between guiderollers G G andpitman G ,connectin g treadle G and grappling-hook G. Then outer end oftreadle is depressed, lower end of grappling hook is drawn down and outand the upper end of said hook is carried forward an d downward, therebyengaging with and drawing down the free end of the stave to catch E.

The cutting mechanism and the provisions for moving the carriage arestationary rela tive to the frame of the machine.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, 1s

1. In a stave-jointing machine, the combination, with the frame and thecarriage having stave-retaining catches, of grappling-hook G, having asliding and a tilting motion, the supports G to guide the grappling-hookin its twofold movement, and the treadle connected with the saidgrappling-hook for operating the same, substantially as and for the.purpose set forth.

2. The combination, with the frame and the carriage havingstave-retaining catches, of the guide-rollers G4 G on the frame, thegrappling-hook passing between the guide-rollers, the treadle connectedwith the grapplinghook, and the spring G for returning the treadle to anormal position, substantially as and for the purpose described.

3. In a stave-jointing machine, the combination, with the frame, thestationary cutters, and the carriage, of the mechanism R, R, and II foroperating the carriage, the lever I, and the stops on the carriage foroperating lever I and reversing the motion of the said carriage,substantially as described.

4. In a stave-jointing machine, the combination, with the frame, therollers P P for carrying the stave from the machine, the trav elingcarriage having retaining-catches, and the stop N, of the guide 0 fordirecting the released stave between the rollers P P, substantially asdescribed.

5. A stave-jointing machine comprising the frame, stationary cutters, acarriage having stave-retaining catches, mechanism for movin g thecarriage, stops on the carriage for reversing the said mechanism,bending devices for forcing the stave down on the carriage, stop N forreleasing the stave, rollers P P, and guide 0 for directing the stavebetween the rollers P P, substantially as described.

In testimony whereof I affix mysignature in presence of two witnesses.

J AMES PLEUKII .XRP.

\Vitnesses:

BARTON GRIFFITH, MERGE SwANsoN.

